The Bay Lights is an installation done by Leo Villareal. He fitted thousands of LEDs to the Golden Gate Bridge in San Francisco, California and created a dazzling light show. If I am not mistaken, I believe he left the possibility for the lighting effects and patterns to be controllable from his laptop but I am sure the option of running a preset loop is there as well by default.
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Inspired by The Wizard of Oz, my switch idea involves clicking your heels together to close the circuit. The 5v wire coming from the microcontroller would be fixed to one heel, while the wire going to the resistor in the breadboard is fixed to the other heel. Connecting the two heels will close the circuit and light up the LED.
Here is a schematic showing the design of my switch:
